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生态系统恢复力是森林资源可持续发展的中心目标之一。在明确生态系统恢复力定义和尺度的基础上,分析了森林生态系统恢复力的影响因素,从生境条件和生态存储两方面遴选出26个指标,建立了森林生态系统恢复力评价指标体系,并以江西省莲花县为案例区,采用组合赋权法确定了指标权重,通过空间叠加计算了莲花县森林生态系统恢复力。结果表明:森林生态系统恢复力主要受内部存储的影响,其权重达到0.554。莲花县森林生态系统恢复力在0.103到0.464之间,平均值为0.268,恢复力达到或超过平均水平的森林面积为37 907 hm2,占森林总面积的49.2%,整体处于较低水平;分级结果表明仅48.16%的森林达到高或较高恢复力水平;在空间分布上,莲花县森林生态系统恢复力为南高北低,南部和中部的森林大多处于高或较高恢复力水平,北部地区大部分森林处于中等、较低或低恢复力水平。此外,恢复力高的森林沿乡镇边界线分布的特点非常明显。该研究结果可为森林资源管理提供重要科学依据。
Ecosystem resilience is one of the central goals of sustainable development of forest resources. Based on the definition and scale of ecosystem resilience, the influencing factors of resilience of forest ecosystem were analyzed. Twenty-six indicators were selected from the aspects of habitat conditions and ecological storage, and the evaluation index system of forest ecosystem resilience was established. Taking Lianhua County of Jiangxi Province as a case area, the index weights were determined by combinatorial weighting method, and the resilience of forest ecosystem in Lianhua County was calculated by spatial superposition. The results show that the resilience of forest ecosystem is mainly affected by internal storage, and its weight reaches 0.554. The restoration of forest ecosystem in Lianhua County was between 0.103 and 0.464 with an average of 0.268. The forest area with resilience at or above average reached 37 907 hm2, accounting for 49.2% of the total forest area, with a low overall level. The grading results Indicating that only 48.16% of the forests reach high or high resilience levels. In terms of spatial distribution, the forest ecosystem resilience of Lianhua County is high in the south and low in the north, while the forests in the south and the middle are mostly at high or high resilience levels. Most forests are at medium, low or low resilience levels. In addition, the resilience of forests along the township boundary line distribution is very obvious. The results of this study can provide important scientific evidences for forest resources management.